#!/bin/bash

sed -ri 's/^(eth[0-9]: .*|)$//g; T; d' /etc/issue
echo >> /etc/issue
ip addr show scope global |sed -r 's/^.*inet ([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/[0-9]+ brd .* (eth[0-9])$/\2: \1/g; t; d' >> /etc/issue
echo >> /etc/issue